Numerical simulation of conjugated heat exchange in laminar motion of oil fluid in a well

Abstract

A mathematical model of conjugate heat transfer during the laminar movement of oil fluid in the well is proposed. The motion of a gas-liquid medium in a two-dimensional axisymmetric stationary formulation is described by the equations of the boundary layer. A case of well operation in which oil is lifted to the surface due to reservoir energyis considered. A three-component medium is presented as a mixture of two components: formation of oil with dissolved gas and formation of water. The results of numerical modeling are presented, which make it possible to analyze the thermobaric state of the well under the condition of the developing flow in the pipe at the initial stage of stabilization and taking into account the phase transition associated with the formation of paraffin deposits.

Numerical Simulation of Conjugate Heat Exchange at Gas Flowing in a Well

“…The mathematical models are widely used for describing the turbulent gas flow, for example, in [6 -8]. In [9,10] the solutions for the problems of conjugate heat exchange are given for the laminar and turbulent flows of formation fluid in a well. It is shown that the movement of the formation fluid containing heavy hydrocarbons can lead to the formation of paraffin on the inner walls of wells.…”